Panasonic TC-P50S1 User Manual

Page of 77
Slide #43
5 Blinks Error Code
1. 
Missing P5V
2. 
A short of the P5V
3. 
A short of the Vda line (Note: missing Vda from the P board does not cause 5 blinks)
4. 
Wrong diagnostic by the A board
These 4 conditions can cause the TV to shut down and the power LED to blink 5 times